Private branch exchanges for connection to public switched telephone networks run by certain public telecommunications operators, Specification for ports— 162 стр.
Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface, Requirements for apparatus for connection to Channel Associated Signalling Systems (CASS)— 18 стр.
Apparatus for connection to public telecommunications systems using the Digital Access Signalling System No. 2 (DASS 2) via a 2048 kbit/s CCITT Recommendation G.703 interface, Requirements for apparatus for connection to Channel Associated Signalling Systems (CASS)— 18 стр.
